Reversible cartridge for plastic material



Jan 6, 1931. P. A. TOMES REVERSIBLE CARTRIDGE FOR PLASTIC MATERIAL ori inal Filed March 51, 1927 INVENTOR ATTORNEYS Patented Jan 6, 1931 11 m STATES PATENT: OFFICE PERCY AUSTEN' aromas, or BROOKLYN, NEW YORK REVERSIBLE cnnrnrnen Fort PLASTIC MATERIAL I Original application filedliiamh 31, 1927, Serial No. 179,900. Divided and this application filed February o 14, 1929. Serial No. 339,908.

plunger may be left in its so advanced position, the tube removed from the gun and re filled with plastic material through its other end. The tube is then reversed and inserted into the gun and the plastic material ejected through the last named end by the movement of the free plunger toward the said end. I

'A practical embodiment of my invention is represented in the accompanying dI2ftW-' ings, in which Fig. 1 represents a side elevation of the cartridge with the free plunger located at one end thereof;

Fig. 2 represents a longitudinal central section through the cartridge with the free plunger at the other end thereof;

Fig. 3 represents an end view of the car I tridge;

Fig. 4 represents a detail longitudinal contral section through a fluid pressure gun for ejecting plastic material from the cartridge, the free plunger being shown in full lines at one end of the cartridge and in dotted lines at the other end of the cartridge,and

Fig. 5 represents a cross section taken in g the plane of the line VV of Fig. 4.

The cartridge 1 for containing the plastic I material comprises a tube open'at both ends,

. which tube is made. of some suitable rigid and durable material, such, for instance, as thin sheet metal. free plunger 2 of suitable material, such, forinstanc as felt is loated within the tube andis fitted to be moved by pressure from end to end of the tube to eject the plastic material therefrom through either end. The fluid pressure operated gun, a portion of whiehis illustrated in the accompanying drawings, comprises, generally,

- the barrel 3, the handle 4: and the nozzle 5.

plastic material through itsother end. The

cartridge is then placed in the gun and the plastic material is ejected through the open end of the tube by the advance movement of the free plunger 2. After the plasticmaterial has been ejected from the tube, the cartridge is removed from the gun and is refilled; with plastic material through .its

otherendand the cartridge reversed and again inserted into the gun where the advance movement of the free plunger will eject the plastic material through the said last named end. j V

From the'above description it will be seen that I have provided a cartridge suitable for repeated 'use,1it being understood that after the free plunger has been moved to one end of the cartridge it will not have to be disturbed while the cartridge is being refilledg the mere reversal of. the cartridge bringing it into user l The parts of the gun shown and described, but not claimed herein, form the subject matter of mycopending application filed March 31st, 1927, Serial No. 17 9,900, of which this. application is a division. 7

L A reversible cartridge for use in guns for ejecting plastic material, said cartridge con'iprising an open ended closedjsided tube for containing the plastic material and a free plunger arranged to be llIlOVK-Bd from end to end of the tube in either direction for ejccting the 3 plastic material. tl'iercfrom, so that when the plastic n'iaterial has been ejected through one end of the tube the plunger may be left in its advance POSltlOl'l, thelube re- 1noved-ttrointhe gun and refilled through its other end, 'T

2., reversible cartridge for use in guns for ejecting plastic material, said cartridge comprising an openended closed sided tube of rigid and permanent material for containing the plastic material and a free plunger arranged to be mored from end to end of the tube in either direction for ejecting the plastic material therefrom, so that When the plastic material has been ejected through one end of the tube the plunger may be left in its ad- 5 Vance position, the tube removed from the gun and refilled through its other end. a

Z}. A reversible cartridge for use in guns for ejecting plastic material, said cartridge "'omprlsing an open ended closed sided tube of thin sheet metal for containing theplastic material and a free plunger arranged to be moved from end to end of the tube in either direct-ion for ejecting the plastic material "herefrom, so that when the plastic material has been ejected through one end-of the tube the plunger may be left in its advance posi- .tion, the tube removed from the gun'and re-.

filled throughits other end. a

In testimony that I claim the foregoing as my invention, I have signed my name this 12 day of February, 1929. i PERCY AUSTEN TOMES. 

